Why can't I xor strings?
grante at visi.com
Sun Oct 10 17:24:21 CEST 2004
On 2004-10-10, Ville Vainio <ville at spammers.com> wrote:
>>>>>> "Grant" == Grant Edwards <grante at visi.com> writes:
> Grant> I don't know what you mean by that. Nobody seems to have a
> Grant> problem with "and" "or" and "not" operators using the truth
> Grant> values of strings. What is there about "xor" that
> Grant> precludes it from behaving similarly?
> It's just that logical xor is an extremely rare beast.
Probably so, but that doesn't support the arguement that
there's something wrong with a logical xor argument coercing
it's operands to boolean values unless one also argues that
the logical "and", "or" and "not" operators should also not
coerce their operands to booleans.
> I would probably prefer to see the operation expanded to the
> more typical and-or-nots in real code.
If logical operators shouldn't coerce operands, then what you
should see is:
if (bool(string1) and (not bool(string2)) or ((not bool(string1)) and bool(string2))
Grant Edwards grante Yow! A shapely CATHOLIC
at SCHOOLGIRL is FIDGETING
visi.com inside my costume...
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